<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8"
          ><el-input
            placeholder="请输入内容"
            clearable
            v-model="queryInfo.query"
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage"
            >添加商品</el-button
          ></el-col
        >
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index" label="#"> </el-table-column>
        <el-table-column prop="goods_name" label="商品名称"> </el-table-column>
        <el-table-column prop="goods_price" label="商品价格（元）" width="95px">
        </el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70px">
        </el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
        <!-- layout 表示页面显示哪些组件 total表示后台所有数据条数-->
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //获取商品列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10,
      },
      goodslist: [],
      total: 0,
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo,
      })
      if (res.meta.status !== 200)
        return this.$message({
          showClose: true,
          message: '获取商品列表失败!',
          type: 'error',
        })
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    //根据ID删除对应的商品数据
    async removeById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)

      //如果用户确认删除，则返回字符串 confirm
      //如果用户取消删除，则返回字符串 cancel
      // console.log(confirmResult)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已撤销 删除')
      }
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        this.$message({
          showClose: true,
          message: '删除商品信息失败！',
          type: 'error',
        })
      }
      // 提示数据删除成功
      this.$message({
        showClose: true,
        message: '删除商品信息成功！',
        type: 'success',
      })
      //重新获取用户列表数据
      this.getGoodsList()
    },
    // 跳转到/add页面
    goAddpage() {
      this.$router.push('/goods/add')
    },
  },
}
</script>


<style lang="less" scoped>
</style>